Machine for pointing and lapping hoops.



No. 774,216. PATENTED NOV. 8, 1904. A. F. WARD.

MACHINE FOR POINTING AND LAPPING HOOPS.

APPLIOATION FILED NOV.19, 1903.

NO MODEL. esmms-snnm 1.

NO. 774.216. PATENTED NOV. 8. 1904.

' A. F. WARD. MACHINE FOR POINTING AND LAPPING HOOPS.

APPLICATION FILED NOV. 19, 1903.

N0 MODEL. 6SHEETSSHEET 2.

PATENTED NOV, 8, 1904.

A. F. WARD. MAGHINE FOR POINTING AND LAPPING HOOPS.

APPLICATION FILED NOV. 19. 1903.

6 SHEETS-$11331 3.

.NO MODEL.

No. 774,216. PATENTED NOV. 8, 1904.

A. F. WARD.

MACHINE FOR FOINTING AND LAPPING HOOPS.

APPLICATION TILED NOV. 19. 1902.

N0 MODEL. 6SHEETS-SHEET 4.

No. 774,216. PATENTED NOV. 8, 1904'. A; F. WARD.

MACHINE FOR POINTING AND LAPPING HOOPS.

APPLICATION FILED HOV.19, 1903.

NO MODEL BSHEETS-SHEET 5.

No. 774,216. PATENTED NOV. 8.1904.

A. F. WARD.

MACHINE FOR POINTING AND LAPPING HOOPS. APPLIOATION FILED NOV.19. 1903.

no MODEL. 6SHEETSSHEET a.

sses UNTTEE STATES PATENT Patented November 8, 1904.

FFIQE.

MACHINE FOR POINTING AND LAPPING HOOPS- SPECIFICATION forming part ofLetters Patent N 0. 774,216, dated November 8, 1904. Appli ati n filedNovember 19, 1903. Serial No. 181,856. (No model.)

To all 1072/0717, it may concern:

Be it known that I, ALEXANDER F. WARD, a citizen of the United States,residing at Memphis, Shelby county, State of Tennessee, have inventedcertain new and useful Improvements in Machines for Pointing and LappingHoops, of which the following is a specification.

This invention relates to certain new and useful improvements in amachine for pointing and lapping hoops, and relates especially toimprovements in the details and construction of same.

The objects of my invention are, first, to

provide means for adjusting the machine for,

difi'erent length hoops; second, to provide means for tightening thebelt; third, to provide asimple and efficientcut-ofi' device; fourth, toprovide a pointer acting independently of the cut-off device; fifth, toprovide a simple and efficient means for feeding the hoop to the lapper,and, sixth, to generally improve the details ofthe machine. I accomplishthese objects as will be more fully hereinafter set forth in thedrawings, specification, and claims.

In the drawings, Figure 1 is a plan view of the machine. tion taken onthe line II II of Fig. 1. Fig. 3 is an end elevation of the right-handend, as shown in Figs. 1 and 2, of the machine. Fig. 4 is a sectiononthe line IV IV of Fig. 1. Figs. 5, 6, and 7 are detail end elevation,section, and end elevation, respectively, of the drum which carries thehoops while they are being lapped. Figs. 8 and 9 are side and endelevation, respectively, of the cut-off shear. Fig. 10 is a fragmentaryview on the line X of Fig. 2 looking in the direction of the arrow,showing the hoop-centering device. Figs. 11 and 12 are an enlarged sideview and section of the lapper-cutters and the head that carries them.Fig. 13 is a sectional view taken on the line XIII of Fig. 1 looking inthe direction of the arrow and showing the spring which holds thelapper-head to its work. Fig. 1 1 isa perspective view of the hoop-guide11, showing position of hoop with regard to the guide when the shear isacting on the opposite end. Fig. 15 is an enlarged plan view showingrelative location of the cut-off shears, hoop-guide, and pointing-knivesand showing Fig. 2 is a sectional side eleva the action of thesemechanisms more especially on a hoop which is very slightly overlength.

Referring now to the drawings, in which like parts are represented bythe same or like characters in all the views, the machine comprises amain frame 1, having side rails 2 and end rails 3. The end rails 3 carrybearings 4, in which adrum-shaft5 is mounted. Near the right-hand end ofthe machine, as shown in Figs. 1 and 2, a drum 6 is mounted on the shaft5 and fastened to same. Facing the drum 6 is a sliding drum 7, which isalso mounted on the shaft 5 and which carries a key sliding in a spline(not shown) in the said shaft. This drum 7 is carried in a movablecarriage 8, which is supported from the side rails 2-and slides on same.

An extension 9 of the carriage 8 carries a lapperhead 10, provided withcutters 11, preferably held by set-screws 12. Spaces 13 are cut away infront of the cutters 11 to allow clearance for chips. 14. is thelapperhead shaft, and 15 the drive-pulley for same. These heads are heldto place by a spring 16 in a cup 17 and bearing against the end of theshaft, which spring allows a sufiicient amount of play to preventchoking of the head, yet always brings the head back to place when thetrouble is passed.

A bracket 9, corresponding to the bracket 9, is fixed to the frame 1 andextends out and supports a lapper-head 10 for the drum 6. These twolapper-heads 10 are driven by a single belt 18, which passes over thetightener 19, thence over the pulleys 15 and a drivepulley 20. Thetightener 19 ismounted in a sliding bracket 21, which is mounted on arail 22 and is entirely independent of the drum and lapper-carriage 8.A'cord 23 extends from the bracket 21 over a pulley24: and carries anautomatic tightener in the-form of a weight 25, having a pulley 26,which rests in a bight in the cord 23, which cord is thence extendedupward to a reel 27, on which it is wound. If desired,a link 28 is usedto limit the motion of the weight.

29 is a handle for winding up the reel 27.

30 is a ratchet-pawl, and 31 a ratchet-wheel, for holding the reel whenit is wound up.

A bracket 32, bolted to the carriage 8, car- This device comprises riesthe cut-off device. top and bottom shear-disks 33 and 34, which arecarried on shafts 35 and 36, respectively, the upper of which, 35, isprovided with a spring 37 to hold it against its work. The lower shear34 is provided with notches 38, which catch the hoop. The shaft 36,which carries the shear 34, also carries a sprocket-gear 39, whichserves as an idler and guide-pulley for the feed-chain 40, which drivesit. Opposite the cut-off shears 33 34 is a guide 41 for the end of thehoop. This guide is so shaped and placed that when a hoop reaches thepoint 42 it is in position to be cut off to its correct length. At thispoint the guide is cut away so that at the moment the shears catch it itis free to move longitudinally a limited amount. A hoop, therefore, tooshort to allow the shear to catch a firm hold is free to move enough toallow the hoop to clear the shear. Passing forward after being cut, thesecond guide 43 brings it back to its proper place for pointing. Thesepoints are clearly shown in Fig. 15, in which a hoop is shown insuccessive positions (1/ b 0 (Z (a. The hoop chosen for thisillustration is practically of correct length, but is not out quitesquare at one end, so that the shear does not get a firm hold to cut itoff. Position (0 shows the hoop just striking the guide 41. Position 7)shows it positioned by the guide just before it enters the shear 33 34.It will be seen that the shear cannot get a good bite on the hoop and istherefore likely to push it endwise in the direction of the guide,which, as before stated, is cut away for this purpose. Position 0 showsthe hoop as pushed aside by the guide, and position (Z shows it againbrought into alinement by the guide 43 and ready for pointing. Position0 shows hoop being pointed.

f shows a long hoop approaching the guide and one which would be firmlycaught by the shear and in all probability would not be bencfited by acut-away guide such as shown.

The hoops are fed to the machine by the chains 40, which are driven bysprockets 44, carried by the drum-shaft 5.

45 is an idler-pulley over which the chain 40 1 passes. Lugs 40 on thechains 40 carry the hoops forward.

Guides 47 48 are provided on which the 1 hoops rest as they are carriedforward by the chains 40. These guides are parallel and are spaced aparta sufficient distance for the chain to pass between them. They areexactly the same in shape, except that the guide 47 comes in line withthe end of the drum and is cut away for same. From the guides the hoopspass beneath a flat strap 49, which holds it against the drum.

oted to the frame 51, (referring especially to Fig. 4,) carried by thecarriage 8, and at the This strap is fastened at 1 one end to acounterbalance-weight 50, piv- 1 a other end by an arm 52, pointingdownward at an angle, so that the tension of the weight l 50 will causeit to swing against the drum. This arm 52 is supported by a bracket 53,

carried by the carriage 8. A similar weight 1 50, arms 51 and 52, andbracket 53, carried by the frame of the machine, are provided for thefixed drum.

54 is an arm pivoted at 55 and moved by a cam 56 on the shaft 57. Thisarm 54 carries a centering-piece 58. (Seen in detail in Fig. 10.) As thehoop is advanced by the chain 4O intermittently, as will be furtherexplained, this centering-piece 58 is brought down as the chain stopsand centers the hoop. Immediately after the hoop has been centered it ispointed by knives 59, carried by an arm 60, which is pivot-ed at 55 andis operated by a connecting-rod 61, which extends downward to acrank-arm 62 on the shaft 57. The knives 59 are provided with slots 63and are held by bolts 64 to a block 65, bolted to the arm 60.

1 This block is \l-shaped, as shown in plan in Fig. 1, and holds theknives 59 at the proper angle to point the hoop before lapping it.

1 The drive for the drums 6 and 7,the sprocketchains 40, the cut-offshears 33 34, the knives 59, and the centering-piece 58 comprise a pul--ley 66 on the shaft 67, driven by the tight pulley 68, (69 being aloose pulley,) which shaft also carries the drive-pulley 20, beforementioned. From this pulley 66 a belt 70 extends to a pulley 71, carriedon a shaft 72,

y which shaft is mounted in bearings 73 in the 1 frame 1. This shaftalso carries a pinion 74,

' which meshes with a gear 75 on the shaft 57, which shaft, as beforementioned, carries a cam 56 and crank-arm 62, operating the centeringdevice 58 and the pointing-knives 59. In addition this shaft carries asecond crank i-arm, 76, which through a connecting-rod 77, an arm 78,and a pawl 79 operates a ratchetwheel 80, which ratchet-wheel is mountedon the shaft 5, which carries the drums 6 and 7.

A cam 81 is also mounted on the shaft 57 and acts with a bell-cranklever 82, pivoted to the main frame at 83 to form a positive stop andrelease for a face-wheel 84, having projections 85, extending outwardfrom its face. The cam 81 is set in advance of the crank-arm 76, so thatit throws the lever 82 out of engagement with the lugs 85 just as theratchet-pawl 79 is brought to its lowest position, and it is so shapedthat it will release the bell-crank arm and allow it to lock the plate84 just after the l ratchet-pawl 79 has reached its highest posi tion.Since now the sprocket-wheel 44 and the drums 6 and 7 are also fastenedto the shaft 5, it follows that the sprocket and drums, thesprocket-chain, and the mechanism operated by said chain will allreceive an intermittent motion from the ratchet-wheel 80.

86, Figs. 6 and 7, represents seats in the drums, which are arranged tocatch the hoops l and carry them to the lapper-heads. As

ITO

- guide 41 to shown, these seats are inclined to the axis of the drum onthe same angle as the conical portion of the drum. These seats areprovided with spurs 87, which stick into the hoop when same is broughtagainst the seats and hold it against longitudinal movement.

The operation of the machine is as follows: Hoops are fed on the guides47 a8 and are picked up by the sprocket-chain 40 and moved forwardintermittently by same. The guide ll moves the hoop longitudinally intoline and the cut-off shears 33 34L catch and cut it to its properlength. The hoop then passes under the pointing-knives 59, the action ofthe mechanism being so timed that the chain comes to a full stop andbrings the hoop to a stop immediately beneath them. The center-'ing-piece 58 comes down and centers the hoop. Immediately following thisthe knives 59 descend and point the hoops. The centering device 58remains down till the knives catch the hoop, then begin to rise, andwhen the knives have pointed the hoops they, too, are raised clear ofsame. It will be especially noted in this connection that the hoops arecut off to their proper length before the pointing is done, that arelease is provided in the prevent hoops which are practically of thecorrect length from binding while they are being out oh, that the hoopsare brought after cutting off to the proper position for thepointing-knives to act on them correctly by the second guide, 43, andthat the pointing being done after the cutting 03 and not simultaneouslytherewith there is no danger of the hoops being jammed into the pointingdevice so tight that it will bind against same and that trouble will beexperienced in releasing same and the consequent extra wear on the faceof the pointing-knives is obviated. As the knives 59 clear the hoop thechain 40 is again put in motion and the hoops move forward under thestrap 49 to the drums 6 and 7. It is caught by the seats 86 in the drumand by the spurs 87 projecting upward from these seats. It is held downby the straps I9 and is moved forward not only by the drum, but by thelugs on the feedcha-in and is carried around to the lappingheads 10,which, as will be noted by the proportion of the pulleys 15 and 20, aredriven steadily at a rapid rate. These lapping-heads are provided, asbefore mentioned, with cutters which project slightly beyond the faceand periphery of the drum, but not sufficient to enable them to catchsuch a hold on the hoop as to move it longitudinally. This latter motionof the hoop is especially provided against, however, by the spurs 87,before mentioned. After being lapped the hoops drop straight down fromthe lappers outside the frame of the machine.

can of course be provided, carry these hoops out from the machine,allowing them to come clear from the refuse. In this connection especialattention is called to the vertical position of the lapper-heads, bywhich the material acted on by them is carried away from them by gravityand clogging is thereby prevented.

It will be especially noted that the lapperheads are driven by a singlebelt kept under uniform tension by the weight 25 and that at any timethe tension on the belt can be relieved by simply releasing thecord-reel. It will be noted, too, that the tension is not only uniform,but that it cannot be varied from this tension by a careless attendant.

Having now fully described my invention, what I claim, and desire tosecure by Letters Patent of the United States, is-

1. In a machine for lapping hoops, the combination with a feed-chainhaving lugs thereon, of a rotary shear comprising a cuttingdisk drivenby said feed-chain, said disk having notches located in its periphery,and coacting with the lugs on said feed-chain.

2. In a machine for pointing and lapping hoops, the combination withlapper-heads and means for driving same, of feed-drums provided withrecesses to carry the hoops, spurs projecting from said recesses intothe hoops and means of driving said drums, substantially as shown anddescribed.

3. In a machine for lapping hoops, the combination with lapper-heads andmeans of driving same, of feed-drums provided with longitudinal seatsinclined toward the axis of said drums and means of driving said drums.

4. In a machine for lapping hoops, the combination with lapper-heads andmeans of driving same, of feed-drums provided with longitudinal seatsinclined toward the axis of said drums and spurs projecting from saidseats.

5. In a machine for lapping hoops, the combination with lapper-heads andmeans of driving same, of feed-drums provided with longitudinal seatsinclined toward the axis of said drums, arms each pivoted at one end, astrap extending partially around each of said drums, and attached to thefree end of said swinging arm between the point of support of said armsand said drums and a tension-weight on the opposite end of each strap.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALEXANDER F. WARD.

Witnesses:

W. H. TAYLOR, G. W. MILLER.

Suitable guides if so desired, to

